Direct-current dynamo-electric machine.



PATBNTED JUNE 25, 1907.

I 3.0. WRIGHT. DIRECT GURRENT DYNAMO ELECTRIC MACHINE.

Y APPLIOATIONIILED NOV. 30, 1906.

uevxv o m/mg UNITED STTEXTES PATENT ()FFTGF;

EDWIN c. WRIGHT, or NEWPORT, KENTUCKY, ASSIGNOR TO ALLrs-cnAL- MERSCOMPANY, A cosronarron OF NEW .nrnsnr, AND THE BULLOoK ELEOTRIGMANUFACTURING oonran'r, A CORPORATION OF OHIO.

DERECT' -GUR iiirdl" T3YNAitl@"-Ei..EGTRl@ lVlACHlNE.

No. 858,2fi6.. fispecification of Letters Patent. Patented June 25, 1907Application filed November 30, 1906- Elerial No. 3&5600.

To all whom it may C W corn: supported that a movement or displacementBe it known that l, EDWIN C. Were-Hr, a is Impossible. 5 5 citizenof'the United States, residing at New- My invention further consists incertain port, in the county of Campbell and State of novel details ofconstruction and combina- 5 Kentucky, have invented certain new andtions of elements described in the specific useful Improvements inDirect-Current Dytion and set forth in the appended claims.namo-Electric Machines, of which the tollow- For a better understandingof my invon- 6o ing a full, clear, and exact specification. tion,reference is had to the accompanying My invention. relates todynamoelectric drawings in which Io machines, and particularly to highspeed ma- Figure 1 is a partial longitudinal sectional chines of thedirect current type such as dielevation of the rotary member of a 'highrect current turbo-generators. speed direct current machine equippedwith In a high speed machine, it is necessary to my invention; and Fig.2 is an end view of provide means for holding in position the the same,the shaft being shown in section. I 5 portions of the coilswhich projectbeyond Referring now to the figures of the drawthe ends of the core, sothat the coils can not ing, 1 have shown at 10 a shaft on which the bedisplaced by centrifugal action. It has armature 11 and commutator 12are mountbeen proposed tO' surround the coils by ed. The armature coreconsists of laminae heavy rings or bandsmade from some mateclampedbetween end members one of which 20 rial such as'phosphor bronze. /Vhenrings is shown at 13. The armature is provided are employed for thispurpose, it is necessary. with a winding having portions 14 which pro toprovide some means for supporting, cenject beyond the core and rest uponthe shoul- 7 tering and retaining them in position. der or bracket 15extending outwardly from In direct current machine's, considerable theend member 13, the coils being separated 2 5 diihculty has beenexperienced in providing from the bracket by suitable insulation 16.-adequate supporting and protecting means The end member 13 is alsoprovided with a for the coils at the commutator end of the flange 17which in this case is substantially 8o armature for the reason that thecommutaflush with the outer periphery of the core. tor necks or leadsconnectingthe coils to the This flange is provided with openings, pret-0 com'mutatorba'rs render difiicult proper superably Open slots, throughwhich the projectporting of coil retaining rings. Accordingly ingpdrtions of the winding pass. band wires have usually been relied u onfor, The bars 18 of the commutator are supretaining the projectingportions of t is coils ported upon the shaft and are clamped toinposition. This latter expedient is not sat gethcr in" this instance by aplurality of 3 5 isfactory for all types of machines particu shrinkrings 19, two of which are shown; The any large high speed machines,forthe reabars 18 are connected to the-ends of the coils son that athigh peripheral speeds, the band of the armature winding which project awires are in danger of breaking or becoming short distance beyond theshoulder or bracket loose and wrecking the machine. 1 15 or theend-member, by commutator loads 40 The object of my invention is toprovide or necks 20, in this case these leads or necks improved meansfor supporting, centering, areintegral with the bars 18, and are heavierand retaining in positions ring for the proand more rigid than in theusual construction 5 jecting portions of the coils at the comimutafdynamo-electric machines. The commutor end of the machine. I tater leadsor necks are provided at their 45 '11). carrying out my invention Iarrange outer ends with cup or U-shaped portions 21 the commutator leadsso that they accornin which the'ends of the conductors of the plish thisresult. armature winding are located and soldered. 10o

Considering my invention more specific- As is clearly shown the ends ofthe commually, 1- provide rigid commutator leads or tor leads or necksextend outward beyond 5 necks integral with the commutator bars, theconductors of the armature Winding.

which leads project short distance beyond At 22 is shown a protectingring-for the the-endsjofthe coils into agroove or recessed portions ofthe coils which project beyond portionjfbf] labeling-Which is thus sofirmly the core and end-member 13. As is shown,

this ring is provided at its inner end with a grooved or recessedportion 23 and shoulder 24, and at its outer end with a groovedorrecessed'portion and shoulder 26. The inner end of the ring rests onthe flange 17 of the end-member with the shoulder 24 hearing against theside of the flange, the outer end of the ring rests on the outer ends 21of the commutator leads or necks, and the intermediate portion restsupon the coils,fsuitable insulation'27 being interposed between the endsof the commutator leads and the ring, and insulation 28 being interposedbetween the coilsand the'ring.

In assembling the parts, the projecting ortions 14 of the coils arefirst covered with insulation 28, and thering is then slipped into theposition shown with the shoulder 24 bearing. against the flange. Theinsulation 27 is thenplaced in-the grooved or recessed portion 25 of thering, after which the conimutator is'slipp'ed onto the shaftand forcedintofposition with the ends of the commutator-leads or necks located inthe grooved or recessed portion-25 of the ring The coils and commutatorleads'are then soldered to gether. r The insulation 27 is preferablymade otsuch material as will not be injured by" the soldering of thecoils and commutator The parts are so machined that the necks. ring fitstightly over the flange, coils and commutator leads or-ne'c s. 1It'is'seenthat erably spaced apart and braced.

the commutator leads 0 necks support and center the outer end of't ering and prevent longitudinal" movement of the ring. The outer-ends ofthe commutator leads are pref- In' this case this is accomplished:byblocks or projections '29 of insulation which may be integral Withthe insulation 27.

' I have in this case shown commutator leads or necks integral with thecommutator bars. In some instances however the commutator leads or necksmay be separate members riveted or otherwise secured to the bars. Alsoifdesired, the portion of the end ring overhanging thecommutator leads maybe omitted, in which case the commutator leads, would serve to preventaxial movement of the ring, the latter being centered andsupport'ed onthe coils and end-member'13.

' I do not wish to be confined to the exact details shownbut I aim in myclaims to cover position.

2. In combination, an armature, a core, co ls carr1e'd'by' said core andpro ecting be yond the end thereof, a ring surrounding the projectingportionsof' the coils, a commute tor, and commutator leads 'or'necks.connect ing the coils and commutatorbar's, said ring hein'g supportedand retained 1n position by said commutat'orleads.

3. In combination, an armature, a core, coils carried by said core andprojecting beyond the" end thereof, a ring surrounding the projectingportions of the coils,'-a co'mmuta-' tor, and commutatorleads' or'ne'cksconnectmg the coils and commutator bars, sa1d commutator leads extendingoutward beyond" the ends of the coils and serving to support and retainthe ring in position.

4;. In combination, an armature-eta dy- I namo-electric machine,comprising a core, colls pro ectlng beyond the core, and a ringsurrounding the projecting portionsof'the coils and commutatonan'dcommutator leads or necks integral with the commutator bars, said leadsor necks serving to retain the ring in position.

5. In combination, an armature core, coils carried by the core andprojecting beyond the end t erect, a ring surrounding the pro jectingportions of the coils, said ring having a grooved or recessed portionadjacent'the outer ends of the coils, and rigid commuta tor leadsornecks integral with" the commdf tator bars, the ends of said commutatorfleads or necks" being located within the grooved or recessed portionofjthe'ring so as to support and retain the ring in position. I Intestimony whereof I aflix my signature, in the presence of twowitnesses.

EDWIN C. WRIGHT. Witnesses GEO. B. SCHLEY, FRED J l KINsEY.

